All about NEN 3140

Use the designation tool as an aid when drafting designation letters for VOP, VP and IV-WV.

By filling in a number of criteria, you will gain insight into who is granted access to certain electrical workrooms and cabinets, and which PPE must be used in certain cases.

Use the tool as an aid to determine when supervision is required during electrotechnical work.

Calculate the repetition period for the instruction of IV, WV, VP and VOP.

Use this calculator as an aid when determining the inspection period for fixed electrical installations.

Use this calculator as an aid when determining the inspection period for electrical equipment.

What could the new NEN 3140 design standard mean for your organization?

Use the Arc Flash Calculator as an aid when assessing arc flash risks during electrotechnical work.

In the field of electrical safety, it is the employer's responsibility to ensure that electrical installations, equipment, and devices can be used safely. NEN 3140 provides the framework for this.

According to NEN 3140, persons must be designated in writing by the highest responsible person in the organization. Use the 'Designation tool' to automatically generate designation letters.

The installation responsible person (IV) is responsible for the safety of electrical installations and the designation of other functionaries. The work responsible person (WV) is responsible for safety during work.

A competent person has at least a lower education in energy technology or equivalent and is skilled in the field. The VP may perform electrotechnical work independently.

Sufficiently instructed persons are non-electrotechnical persons who may perform electrotechnical work to a limited extent, provided they have been instructed about the electrical hazards they may encounter.

NEN 3140 sets requirements for the inspection of electrical installations and equipment. These must be carried out periodically, with the installation responsible person determining the inspection frequency.

The NEN 3140 inspection of electrical equipment consists of a visual inspection and measurements. Read everything about the visual inspection, the measurements, who is authorized, and frequently asked questions.

After an NEN 3140 inspection, it is customary to place an inspection sticker on the electrical equipment or piece of equipment. This makes it visible at a glance when the equipment was last inspected and when the next inspection is scheduled. Our vinyl inspection stickers (25 mm) are suitable for all common pieces of equipment.

For electrotechnical work, the installation or equipment must be de-energized. There are two variants: de-energizing for electrotechnical work and for non-electrotechnical work. The requirements differ per situation.

For non-electrotechnical work, the point is that the equipment does not start unintentionally. The requirements for this are less strict than for electrotechnical work.

Lock Out Tag Out (LOTO) is a safety procedure that prevents machines or installations from being switched on unintentionally during maintenance, cleaning, or repair. Mandatory for high-risk work.

Online course for persons who must be designated as VOP in accordance with NEN 3140. Concludes with a certificate.

Online course for electricians who are designated as VP in accordance with NEN 3140. Concludes with a certificate.

Online course for the IV and WV in accordance with NEN 3140. Concludes with a certificate.

Online course about the periodic inspection of electrical equipment in accordance with NEN 3140. Includes inspection list in WORD. Concludes with a certificate.

Learn how to safely inspect underground (press) containers in accordance with NEN 3140. Includes videos about electrical hazards, circuit protections, and measurements. Online, with certificate as VOP.

Online course about the LOTO procedure for safely taking electrical installations out of service. Concludes with a certificate.

Learn how to inspect spreaders in accordance with NEN 3140 in a port environment. Online, with certificate.

Specifically focused on working safely on reefer stacks in the port in accordance with NEN 3140. Online, with certificate.

Learn how to inspect Automated Guided Vehicles (AGVs) in accordance with NEN 3140 in a port environment. Online, with certificate.

NEN 3140 is the Dutch standard for the operation of electrical installations and is based on the European standard EN 50110-1. The NEN 3140 standard describes how employers and employees can work safely on and in the vicinity of electrical installations and equipment.

NEN 3140 applies to employers, installation responsible persons (IV), work responsible persons (WV), competent persons (VP), and sufficiently instructed persons (VOP) who work on or in the vicinity of electrical installations and equipment in businesses and institutions.

No, NEN 3140 is a standard protected by copyright and therefore can never be legally mandatory. However, the Working Conditions Act and the Working Conditions Decree do set requirements for working safely on and in the vicinity of electrical installations, as well as for periodic inspections.

The inspection frequency is determined by the installation responsible person (IV) based on the risk class of the installation or the piece of equipment. There is no fixed statutory period, but the IV is responsible for a periodic and documented inspection.

NEN 1010 concerns the construction and installation of electrical installations (new construction and renovation). NEN 3140 concerns the operation and use of existing electrical installations: working safely, inspections, and designation of persons.

Designation as a Competent Person (VP) or Sufficiently Instructed Person (VOP) is done in writing by the highest responsible person in the organization. The condition is that the person is demonstrably competent.